Inosaki – Your Trusted Phoenix Contact Distributor
Inosaki proudly stands as one of the largest distributors of Phoenix Contact products, offering a comprehensive range of terminal blocks, interface modules, power supplies, and relays.

Our Best-Selling Terminal Blocks: Feed-Through, Fuse Modular, Spring Cage, Double Level, Multi-Level

Series Models: PT Series, ST Series, TB Series, UT Series, and UK Series, PTV Series, UKH Series, Micro Series.

Reliable Power Supply Solutions

Discover industry-leading Phoenix Contact power supplies, such as:

QUINT Power – Premium performance for critical systems
STEP Power – Compact design for space-saving applications
Trio Power – Rugged and reliable for industrial needs
UNO Power – Cost-effective and efficient

Get Your Phoenix Contact Catalog Today
Need detailed product information? Contact us at sales@inosaki.com to request your Phoenix Contact catalog.

Double-level spring-cage terminal block, connection method: Spring-cage connection, cross section: 0.08 mm² – 1.5 mm², AWG: 28 – 16, width: 4.2 mm, color: gray, mounting type: NS 35/7,5, NS 35/15

General

Article Number	3031157
Number of levels	2
Number of connections	4
Nominal cross section	1.5 mm²
Color	gray
Insulating material	PA
Flammability rating according to UL 94	V0
Area of application	Railway industry
	Machine building
	Plant engineering
	Process industry
Rated surge voltage	6 kV
Degree of pollution	3
Overvoltage category	III
Insulating material group	I
Connection in acc. with standard	IEC 60947-7-1
Nominal current I_N	17.5 A
Maximum load current	17.5 A (with 1.5 mm² conductor cross section)
Nominal voltage U_N	500 V
Open side panel	Yes
Shock protection test specification	DIN EN 50274 (VDE 0660-514):2002-11
Back of the hand protection	guaranteed
Finger protection	guaranteed
Result of surge voltage test	Test passed
Result of power-frequency withstand voltage test	Test passed
Power frequency withstand voltage setpoint	1.89 kV
Checking the mechanical stability of terminal points (5 x conductor connection)	Test passed
Result of flexion and pull-out test	Test passed
Bending test rotation speed	10 rpm
Bending test turns	135
Bending test conductor cross section/weight	0.08 mm² / 0.1 kg
	1.5 mm² / 0.4 kg
Tensile test result	Test passed
Result of tight fit on support	Test passed
Setpoint	1 N
Result of voltage-drop test	Test passed
Result of temperature-rise test	Test passed
Short circuit stability result	Test passed
Conductor cross section short circuit testing	1.5 mm²
Short-time current	0.18 kA
Result of aging test	Test passed
Ageing test for screwless modular terminal block temperature cycles	192
Result of thermal test	Test passed
Proof of thermal characteristics (needle flame) effective duration	30 s
Oscillation, broadband noise test result	Test passed
Test specification, oscillation, broadband noise	DIN EN 50155 (VDE 0115-200):2008-03
Test spectrum	Service life test category 2, bogie-mounted
Test frequency	f₁ = 5 Hz to f₂ = 250 Hz
ASD level	6.12 (m/s²)²/Hz
Acceleration	3.12g
Test duration per axis	5 h
Test directions	X-, Y- and Z-axis
Shock test result	Test passed
Test specification, shock test	DIN EN 50155 (VDE 0115-200):2008-03
Shock form	Half-sine
Acceleration	30g
Shock duration	18 ms
Number of shocks per direction	3
Test directions	X-, Y- and Z-axis (pos. and neg.)
Relative insulation material temperature index (Elec.; UL 746 B)	130 °C
Temperature index of insulation material (DIN EN 60216-1 (VDE 0304-21))	125 °C
Static insulating material application in cold	-60 °C
Surface flammability NFPA 130 (ASTM E 162)	passed
Specific optical density of smoke NFPA 130 (ASTM E 662)	passed
Smoke gas toxicity NFPA 130 (SMP 800C)	passed
Calorimetric heat release NFPA 130 (ASTM E 1354)	27,5 MJ/kg
Fire protection for rail vehicles (DIN EN 45545-2) R22	HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R23	HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R24	HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R26	HL 1 – HL 3

Dimensions

Width	4.2 mm
End cover width	2.2 mm
Length	67.5 mm
Height NS 35/7,5	47.5 mm
Height NS 35/15	55 mm

Connection data

Connection method	Spring-cage connection
Conductor cross section solid min.	0.08 mm²
Conductor cross section solid max.	1.5 mm²
Conductor cross section flexible min.	0.08 mm²
Conductor cross section flexible max.	1.5 mm²
Conductor cross section AWG min.	28
Conductor cross section AWG max.	16
Conductor cross section flexible, with ferrule without plastic sleeve min.	0.14 mm²
Conductor cross section flexible, with ferrule without plastic sleeve max.	1.5 mm²
Conductor cross section flexible, with ferrule with plastic sleeve min.	0.14 mm²
Conductor cross section flexible, with ferrule with plastic sleeve max.	1.5 mm²
Two conductors with the same cross section, flexible, with TWIN ferrules, with plastic sleeve, maximum	0.5 mm²
Stripping length	10 mm
Internal cylindrical gage	A1

Ambient conditions

Operating temperature	-60 °C … 105 °C (max. short-term operating temperature 130°C)
Ambient temperature (storage/transport)	-25 °C … 60 °C (for a short time, not exceeding 24 h, -60 °C to +70 °C)
Permissible humidity (storage/transport)	30 % … 70 %
Ambient temperature (assembly)	-5 °C … 70 °C
Ambient temperature (actuation)	-5 °C … 70 °C